Artificial tooth.



- 6, GOLD'FOOT.

ARTIFICIAL TOOTH.

APPLICATION FILED AUG-24. I916- Patented Apr. 29, 1919.

F/GJ.

GEORGE GOLDFOOT, 0F CORK, IRELAND.

ARTIFICIAL TOOTH.

Specification of Letters Patent.

Patented Apr. 29, 191W.

Application filed August 24, 1916. Serial No. 116,713.

1/ 'o oZZ whom it may concern:

Be it known that I, GEORGE GOLDFOOT, L. C. P. E., L. R. C. S. 15., L. F. P., S. G., a subject of the King of England, residing at -l-2 South Mall, in the city of Cork, Ireland, medical and dental practitioner, have invented certain new and useful Improvenzents in or Relating to Artificial Teeth, of which the following is a specification.

This invention relates to interchangeable teeth and backings.

According to the present invention, a portion of the vertical and lingual bases of an artificial tooth, which is provided with a vertical tube or passage, is so shaped or cut as to form a right or an acute angle, or a curve of which the tangents to the extremities thereof form a right or an acute angle to each other; the backing being shaped to fit the bases or base of the tooth and provided on its superior or upper surface with a post adapted to pass through said vertical tube or passage of the tooth.

I will further describe my invention with the aid of the accompanying sheet of explanatory drawings, which illustrate, by way of examples only, modes of embodying same, like characters of reference denoting like or equivalent parts wherever they occur.

In said drawings Figures 1 and 2 illustrate in longitudinal section a porcelain tooth designated a, provided with a vertical tube or passage 6, in which tooth the base and part of the lingual surface are cut away so as to form a right angle-or an acute angle as indicated by the dotted line c-Fig. 1; or a curve (Fig. 2) of which the tangents (Z c to the extremities thereof form a right or an acute angle to each other. Said tube or passage 6 may be unlined as illustrated or lined with smooth or ridged metal, and extends longitudinally through the center and body of the tooth a.

Figs. 3 and 4 illustrate metal backings generally designated 7, which are respectively adapted to fit the teeth according to Figs. 2 and 3, being made with two surfaces which form a right or an acute angle, or a curve of which the tangents to the extremities thereof form a right'or an acute angle each of said backing-s f there is secured the lower end of a post 9 adapted to pass through the tube or passage 6 of its tooth, and which post may be smooth or ridged as desired.

Figs. 5 and (i and views of backings simi lar to Figs. 3 and 4, illustrating the provision on the lingual surface of a projection or tag it for vulcanite work.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is z 1. An interchangeable artificial tooth having a portion of the vertical and lingual bases s0 shaped as to form a right or an acute angle, or a curve of which the tangents to the extremities thereof form aright or an acute angle to each other, and provided with a tube or passage adapted to receive a post secured on the superior or upper surface of a backing.

2. In combination, an interchangeable artificial tooth having a portion of the vertical and lingual bases so shaped as to form a right or an acute angle, or a curve of which the tangents to the extremities thereof form a right or an acute angle to each other, and provided with a tube or passage: and a metal backing formed to fit the bases or base of the tooth and provided on its superior or upper surface with a post adapted to pass through said tube or passage of the tooth.

3. In combination, an interchangeable artificial tooth having a portion of the vertical and lingual bases so shaped as to form a right or an acute angle, or a curve of which the tangents to the extremities thereof form a right or an acute angle to each other, and provided with a tube or passage; and a metal backing formed to fit the bases or base of the tooth and provided on its superior or upper surface with a post adapted to pass through said tube or passage of the tooth and on its lingual surface with a projection or tag.

In testimony whereof I afiix my signature in the presence of two witnesses.

GEORGE GOLDFOOT.

Witnesses:

JOHN H. WALKER, EMILY BURNETT.

Gopics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 1D. (5%. 

